Draft and buffing gear or rigging for cars.



No. 739,769. Y ,y PATBNTED SBPT.'22,1903. I 0. WRIGHT, W. H. STEM s. J. H. PARLUW.

DRAFT AND BUFFING GEAR ORRIGGING FUR CARS.

APPLIUATIox; FILED nu. 14. 190s.

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1 o ,v i@ w n m Engl mm m NN No. 739,769. PATENTED SEPT. 22V', 1903. 0. WRIGHT, W. H. STEM & J. H. PARLUW. DRAFT AND BUFFING GEAR 0B. RIGGING FOR GARS.

APPLIUATIUH FILED MAB.. 14, 1903. l

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D ses swf# No. 739,7ee.

UNITED STATES y rammed september 22, 190e.

PATENT OFFICE.

ORVILLE WRIGHT, OF BALTMOR, WLLlAM I-l. STEM, F UON BRIDG, AND JOHN H. FARLOW, OF BALTIMORE, MARYLAND.

DRAFT AND BUFFING GEAR R Blooms Foa CARS.

SPECIFICATION forming part of Letters Patent No. 739,769, dated September 22, 1903.

v Application filed March 14. 1903. Serial No. 147,798. (No model.)

To @ZZ whom, it may concern:

Be it known that we, I ORvILLE WRIGHT, residing at Baltimore city, WILLIAM H. STEM, residing at Union Bridge, county of Carroll, and JOHN H.. FARLOW, a resident of Baltimore city, Maryland, citizens of the United States, have invented certain new and useful Improvements in Draft and Buiiing Gears or Riggings for Cars, of which the following is a specification.

The object of our invention is the production of an improved draft and buiiing ge'ar'cr rigging for cars Which shall be adapted to embrace as a part thereof, according to the service demanded, a single spring or tandem springs for receiving the main strains of tow-v ing and buin g, which shall bc comparatively simple in'construction and comprised of suit-v able elements so combined and arranged that repairs may be made when necessary very easily and quickly and Without taking the car to the shops, which shall be very strong and capable of withstanding the shocks of severe service, which shall distribute the strains throughout the length of the draft-timbers,

which shall admit'of the removal and replacement of a coupler and draw-bar Without the removal of the spring mechanism, and which shall possess other and desirable novel features of construction constituting the same a superior instrumentality for performing the requisite functions.

With this end and purpose in view our invention consists in certain novelties of construction, arrangement, and combinations of elements and parts hereinafter set forth, and specied in the claims.

The accompanying drawings illustrate two complete examples of the physical embodiment of our invention and a modification of the tandem-spring arrangement constructed according to the best modes we have so far devised for the practical application of the principle.

Figure 1 is a longitudinal sectional View in elevation'of the draft and buffing gear with tandem springs. Fig. 2 is a half top plan view and half horizontal section of the drafttimbers and other parts of the gear. Fig. 3` is a cross-section. Fig. 4 is one of the drafttimber-reinforcing plates. Figs. 5, 6, and 7.1

are views similar to Figs. l, 2, and 3, but illustrating the invention iu connection with a single or compound spring. Fig. S shows one of the follower-pieces used with the tandem spring. Fig. 9-is an end view of Fig. 8. Fig. 10 illustrates a modified construction of the tandem springs in connection with an integral follower pin and boss.

Referring to the several dgnres of the drawings, the numeral 1 designates the central stringers of the car-body; 2, the end sill; 8, the buffer-block; 4f, the draft-timbers; 5, the bolts which secure the draft-timbers to the stringere; 6, elongated slats in the drafttimbers; 7, the central slots in the draft-timbers; 8, the draft-timber plates; 9, elongated slots at the ends ofthe plates; 10, the central slots; 11,lugs surroundingthe slots and adapted to be seated in the draft-timbers; l2, bolts which secure the plates to the draft-timbers;

13, the chafing-plate; 14, the carry-iron; 15, the bolts which pass through-the carry-iron,

the chafingplate,and the buffer-block3 16, the draw-bar yokes; 17, the end slots in the yokes; 18, the central elongated slots; 20, the draw-bar of the coupler; 2l, an elongated slot in the draw-bar; 22, the front follower-block; 23, an elongated slot in the block; 24:, a recess in 'the end of theblock; 25, the rear follower-block; 26, a slot in the block; 27, arecess in the end of the block; `28, equalizingpieces which are located in the slots of the draft-timbers, plates, yokes, blocks, and drawbar and which are held in place by cotters; 29, a fixed abutment between the tandem springs; 30, bolts which anchor the abutments; 31, an open space at the center of the abutment; 32, loose follower-plates, and 33 the tandem springs.

In Figs. 1, 2, 3, 8, and 9 the numeral 35 designates the front follower-pin 3 36, the rear follower-pin; 37,the heads of both pins,which two pins are of thev same construction; 3S,

'slots in the heads of the pins; and 39 repre- The IOC

the purpose of the construction being to hold the adjacent ends of the pins in line and to allow one to travel upon the other.

In Fig. 10 the numeral 40 designates an integral follower-pin, and 41 a central boss of larger diameter than the body of the pin and which boss bears against the followerplates.

In Fig. 5 we show a single or compound spring 42, held between the follower-blocks bylugs 4:3,integral with the ends of the blocks.

The modus operandi of the-first example is as follows: In drawing the outward motion of the draw-bar is imparted to the front and rear equalizing-pins, the yokes, the rear follower-block, the rear follower-pin, and the front followerplate simultaneously. The front follower-block and the rear followerplate are immovable and form abutments for the springs. As the front and rear equalizerpins move forward in the slots, the yokes move over the central equalizer pin, the head of the rear follower-pin moves longitudinally of the front follower-pin, carrying with it the front follower-plate, and consequently compress both the tandem springs equally. When the front and rear equalizingpins reach the ends of the slots, they impart all the additional strains to both the front and rear ends of the draft-timbers, thus distributing the said strains instead of concentrating them at a single point. The compression ofthe springs in this example is approximately one and three-fourths inches; but it may be varied, if so desired, at the will of the constructors of the rigging. In bufng the operation is substantially the same. The slot in the draw-bar moves over the front eqnalizing-pin,the front follower-block moves over the central equalizing-pin, the head of the front follower-pin moves over the head of the rear follower-pin, the rear followerplate moves rearwardly,and both thesprings are compressed until the end of the draw-bar and the front follower-block reach the limit of their travel, when all additional strains are imparted through the medium of the front and central equalizing-pins to the draft-timbers. It will be observed that both thesprings are equally compressed and that the extent of compression is determined by the length of the slots in the draw-bar and in the front follower-block.

In the example shown by Figs. 5, 6, and 7 the mode of operation is substantially the same as in the first example. When drawing, the front follower-block serves as an obstruction for the spring, and it is compressed to the extent of the forward movement of the front and rear equalizing-pins within the slots. In bufng the rear follower-block is immovable and constitutes the abutment for the rear end of the spring. Fig. 10 shows a modified construction in which the front and rear tandem springs are unequally compressed in both drawing and bufing. In

drawing the rear follower-block first oompresses the rear spring until the bottom of the recess 27 in the block strikes the end of the follower-pin 40. Then the pin moves forward the boss 41, carrying with it the front follower-plate, till the front end of the pin'is seated within the recess 2l of the front follower-block. As shown in this case, the rear springY is compressed one and three-fourths inches and the front spring seven-eighths of an inch. The same operation takes place, as is obvious, in the act of bufling, except that the front spring is compressed twice the distance of the compression of the rear spring. It is clear that by shifting the follower-pin to the front or rear and also the abutment the degree of compression of the springs may be varied. For instance, if the pin and abutment be located seven-'eighths of an inch toward the front the rear spring only would be compressed in drawing and both springs be compressed in buing, and vice versa.

The method of assembling the several parts and elements of the gear and the method of replacing a part or element will readily be understood by any person skilled in the art upon an inspection of the drawings, and therefore the same need not be specially set forth.

While We have illustrated and described only two complete examples of the physical embodiment of our invention and one modified arrangement of the spring mechanism, we

do not thereby intend to limit the scope there-` of to such embodiments, inasmuch as the principle may be applied by other. modes.

For the two specific follower-pins 35 and 36` may be substituted 'other pins, which will be of different constructions, but perform like functions. Metallic draft-timbers may be used in place of those shown, either made separate orintegral, the shape of the followerblocks altered, and many other modifications, substitutions, omissions,Y additions, and changes be introduced at the will and choice of the manufacturer withoutconstitutingsubstantial departures.

What we claim as new, and desire to secure by Letters Patent, is-

1. The combination in a draft and bufting gear having slots, of a coupler and draw-bar; a front follower-block; a rear follower-block; a spring or springs between the blocks; slotted yokes; and equalizing-pins a plurality of which are movable within slots of the gear.

2. The combination in a draft and bufing gear having slots, of a coupler and slotted draw-bar; a front follower-block with an elongated slot; a rear follower-block; a spring or springs between the blocks; yokes; and equalizing-pins; the slots in the draw-bar and front follower-block heilig adapted to move over two of the pins during the act of buing.

3. The combination in a draft and bufting gear, of a coupler and draw-bar; a front follower-block; a rear movable follower-block; aspring or springs between the blocks; yokes each having an elongated slot; equalizing-l pins; and slotted supports for the pins; two of ICO IIO

VIS

maree said pins being adapted to move within slots; and the elongated slots of the yokes to move over a pin during the act of drawing'.

4. The combination in a draft and bniing gear, of a draw-bar and coupler; supports` having two elongated slots; two movable pins in the slots; a central equalizing-pin; two slotted yokes the central slots being elongated; a slotted follower-block;`a lrear fol-v lower-block; and a spring or springs between the follower-block; said draw-bar being provided with an elongated slot and within which is located an equalizing-pin.

5. The combination in a' draft and bnfling` gear, of a coupler and draw-bar; a slotted fol-v lower-block in the rear of the end of the drawbar; a rear follower-block; a spring or springs between the blocks; slotted supports or drafttimbers; slotted yokes; and equalizing-pins Within the slots of the draw-bar, bl`ocks,yokes,

and supports; the central equalizing-pin besprings; and means for supporting the tandem sprin gs g said slotted yokes being located between the slotted supports and the followerblooks and serving to transmit motion from the draw-bar to the rear equalizing-pin.

7. The combination in a draft'and bning gear, of a coupler and draw-bar; slotted supports; follower-blocks; slotted yokes; equalizing-pins which support the yokes; tandem springs; and a follower-pin in connection with the tandem springs; the central equalizingpin being fixed, and the other equalizing-pns being movable.

8. The combination in a draft and buffing gear of slottedsupports a rear follower-block; a front follower-block; slotted yokes; a slotted draw bar; equalizing pins; tandem springs between the follower-blocks; a xed abutment; follower-plates each'side of theabutment; rand a follower-pin having 'a boss adapted to engage the follower-plates.

9. The combination in a draft and bufng gear', of slotted supports; a rear followerblock; a front follower-block; slotted yokes; a slotted draw-bar; equalizing-pins; tandem springs between the follower-blocks; a fixed abutment; follower-plates each side of the abutment; andtwo followerpins,one of which is movable relative to the other.

10. The combination in a draft and buffing of, whereby one head( may move relative to the other.

ll. The combination in a draft and buffing gear, of supports having slots two of which are elongated; a rear follower-block supported by an eqnaliZing-pin passed through the block and with its endsin the elongated slots of the supports; af ront slotted follower-block with an equalizing-pin passed through the slot and with its ends in the slots of the supports; a spring or springs between the followerblocks; a coupler and draw-bar; and means connecting the draw-bar with the rear follower-pin whereby motion may be imparted to the rear follower-block.

12. The combination with a draft and buing gear, constructed substantially as set forth,ofadrawbar; springs; follower-blocks; two slotted yokes; slotted supports; pins; andi said yokes being vlocated betweenthe slotted supports and the draw-bar and spring or springs. p

13. The combination with a draft and budin g gear, substantially as described, of drafttimbersand plates 8 8, each having elongated end slots 9 and a central slot 10, for the reception of two movable and one immovable equalizing-pins; and said slots having lugs l1', serving as bearings for the pins.

l-l; The combination with a draft and buffing gear, in substance as set forth,l`of supports` having slots one of which is elongated; two slotted follower-blocks one of which slots is elongated; equalizing-pins in the slot-s of the blocks and supports; a spring; a draw-bar and coupler; and slotted yokes connected withthe draw-'bar for moving the blocks and compressing thespring. i

l5. The combination in a draft and bufng gear, of supports each having three slots; a

ydraw-bar with an elongated slot; a followerlock in the rear of the draw-bar and having an elongated slot; a slotted rear followerblock; a spring between the follower-blocks; slotted yokes located each side of the followerblocks, one of said slots being elongated; and three equalizing-pins within the slots of the several slotted elements; the central pin being fixed and the end pins movable within the.

slots.

16,. The combination in a draft and bufling gear, of supports each having three slots a draw-bar with an elongated slot; a front'follower-block in contact with the end of the draw-bar and having an elongated slot; aslotted rear follower-block; a spring between the follower-blocks; two yokes each having three slots, the central one elongated; and three equalizing-pins within the slots of the several slotted elements; the middle pin being immovable; and the end pins movable, and when the parts are assembled occupying the rear portions of the elongated slots in the supports. A'

17. The combination in a draft and buffing gear, of slotted supports; slotted followerblocks located betweenl the snpports; la spring between the follower-blocks; two slotted Ico IIO.

a draw-bar and coupler; the front ends of the yokes being secured tothe draw-bar, and said yokes movable relative to the fixed pin.

In testimony whereof We afx our signa` tures in the presence of two Witnesses.

I ORVILLE WRIGHT. WM. H. STEM. JOHN H. FARLOW.

Witnesses: x

JAMES J. ALLEN, MURRAY H ANsoN. 

